ip_conntrack_ftp in the IPTables firewall for Linux 2.4 allows remote attackers to bypass…
Priority MEDIUM 45Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
ip_conntrack_ftp in the IPTables firewall for Linux 2.4 allows remote attackers to bypass access restrictions for an FTP server via a PORT command that lists an arbitrary IP address and port number, which is added to the RELATED table and allowed by the firewall.
Why it matters now
EPSS 0.10253 95th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:2.4.0:*:*:*:*:*:*:* | 2.4.0 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.4.0:test1:*:*:*:*:*:* | 2.4.0 test1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.4.1:*:*:*:*:*:*:* | 2.4.1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.4.2:*:*:*:*:*:*:* | 2.4.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.4.3:*:*:*:*:*:*:* | 2.4.3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:2.4.0:*:*:*:*:*:*:* Versions 2.4.0 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.4.0:test1:*:*:*:*:*:* Versions 2.4.0 test1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.4.1:*:*:*:*:*:*:* Versions 2.4.1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.4.2:*:*:*:*:*:*:* Versions 2.4.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.4.3:*:*:*:*:*:*:* Versions 2.4.3 Vulnerable ·Linux
Remediation
Red Hat 1 advisory
- RHSA-2001:084 Released 2001-06-22 · Red Hat rating ImportantKernel
- Red Hat Linux 7.1
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Linux 7.1 | Fixed | RHSA-2001:084 |
Timeline
- 2026-10-02 Threatist record created from CVE-2001-0405
- 2026-10-03 Alias added: GHSA-qphq-fjvj-6855
References
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2001-0405 · CVE Program
- CVE-2001-0405 · NVD
- FIRST EPSS
- GHSA-qphq-fjvj-6855 · GitHub Advisory Database · CC BY 4.0
- CVE-2001-0405 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences